×
模态框（Modal）标题
在这里添加一些文本
Close
Close
Submit
Cancel
Confirm
×
模态框（Modal）标题
在这里添加一些文本
Close
×
Welcome to Visited Lingnan Modern Clinics In Surgery, Today is
Toggle navigation
Home
Journal Information
About Journal
Editorial Board
Indexed In
Author Center
Author Instruction
Sample Article
Submission Instructions
Online Submission
Reader Center
Current Issue
Just Accepted
Archive
Most Read Articles
Most Download Articles
Most Cited Articles
E-mail Alert
RSS
Review Center
Peer Review
Editor-in-Chief
Editor Work
Office Work
Subscription
Contact Us
中文
Comparison of patient controlled epidural analgesia effect between morphine and hydromorphone： meta?analysis
CHEN Weiqiang1， ZHENG Chunqin2， CAO Minghui3
Lingnan Modern Clinics in Surgery . 2019, (
04
): 451 -454 . DOI: 10.3969/j.issn.1009-976X.2019.04.017
